Question

qual é a expressão E cujo desenvolvimento logaritmo ( em base 10) e log E= 1+ log a+2 log b- log c, com ,A,B,C numeros reais positivos

Answer 1

$\mathrm{\ell og\,}E=1+\mathrm{\ell og\,}a+2\mathrm{\,\ell og\,}b-\mathrm{\ell og\,}c\\ \\ \mathrm{\ell og\,}E=\mathrm{\ell og\,}10+\mathrm{\ell og\,}a+\mathrm{\ell og\,}(b^{2})-\mathrm{\ell og\,}c\\ \\ \mathrm{\ell og\,}E=\mathrm{\ell og\,}(10ab^{2})-\mathrm{\ell og\,}c\\ \\ \mathrm{\ell og\,}E=\mathrm{\ell og}\left(\dfrac{10ab^{2}}{c} \right )\\ \\ \\ E=\dfrac{10ab^{2}}{c}$